Hello!
Just to let you know, there are not very many readers on these forums here... so I'm not sure how many will see and respond to your question. But I'll answer your question. lol
I'm a comic creator on Tapas. I don't like phone apps, but I try to make sure I follow Tapas' guidelines on things that will affect how my work is viewed. For instance, Tapas advises us to keep our dialogue font at a MINIMUM of 19pt. It's kinda big, but it accommodates readers who use their app. It also means I can't make tiny panels or too-small drawings on a page.
For me, it's more important that I keep to a workflow that is print-friendly, as I plan to physically publish in the future. So, I kinda do my own thing, keeping some regard for mobile users, but really keeping to how I want the story to be told.
Overall, I prefer desktop, as it's just how I'd rather view people's work. :>